﻿using System;
using System.Collections.Generic;
using System.Collections.Specialized;
using System.IO;
using System.Linq;
using System.Runtime.Serialization.Json;
using System.Text;
using System.Web;
using System.Web.Script.Serialization;

namespace ARS.PublicTool.DataHandle
{
    public class RequestDataToModel
    {
        /// <summary>  
        /// Post提交JSON格式转换为实体类  
        /// </summary>  
        /// <typeparam name="T">类型</typeparam>  
        /// <param name="myrequest">Request对象</param>  
        /// <returns>T</returns>  
        public static T StramTomodelHttpPost<T>(HttpRequest myrequest)
        {
            byte[] byts = new byte[myrequest.InputStream.Length];
            myrequest.InputStream.Read(byts, 0, byts.Length);
            string jsonstr = System.Text.Encoding.Default.GetString(byts);
            if (!String.IsNullOrEmpty(jsonstr))
            {
                DataContractJsonSerializer ser = new DataContractJsonSerializer(typeof(T));
                //JavaScriptSerializer jss = new JavaScriptSerializer();
                try
                {
                    using (MemoryStream ms = new MemoryStream(Encoding.UTF8.GetBytes(jsonstr)))
                    {
                        T jsonObject = (T)ser.ReadObject(ms);
                        return jsonObject;
                    }
                }
                catch (Exception ex)
                {
                    throw new Exception("Serialize Error: " + ex.Message);
                }
            }
            else
                throw new Exception("Not KeyValue ");
        }

        /// <summary>  
        ///  Post提交Form集合转换为实体类  
        /// </summary>  
        /// <typeparam name="T">类型</typeparam>  
        /// <param name="myrequest">Request对象</param>  
        /// <returns>T</returns>  
        public static T FormTomodelHttpPost<T>(HttpRequest myrequest)
        {

            DataContractJsonSerializer ser = new DataContractJsonSerializer(typeof(T));
            NameValueCollection coll = myrequest.Form as NameValueCollection;
            IDictionary<string, object> idc = new Dictionary<string, object>();
            foreach (string name in coll.Keys)
            {
                idc.Add(name, coll[name].ToString());
            }
            if (idc.Count > 0)
            {
                JavaScriptSerializer jss = new JavaScriptSerializer();
                string jsonstr;
                try
                {
                    jsonstr = jss.Serialize(idc);
                    using (MemoryStream ms = new MemoryStream(Encoding.UTF8.GetBytes(jsonstr)))
                    {
                        T jsonObject = (T)ser.ReadObject(ms);
                        return jsonObject;
                    }
                }
                catch (Exception ex)
                {
                    throw new Exception("Serialize Error: " + ex.Message);
                }
            }
            else
                throw new Exception("Not KeyValue ");
        }



        /// <summary>  
        /// Get提交JSON格式转换为实体类  
        /// </summary>  
        /// <typeparam name="T">类型</typeparam>  
        /// <param name="myrequest">Request对象</param>  
        /// <returns>T</returns>  
        public static T StramTomodelHttpGet<T>(string queryString)
        {
            string jsonstr = queryString;
            if (!String.IsNullOrEmpty(jsonstr))
            {
                DataContractJsonSerializer ser = new DataContractJsonSerializer(typeof(T));
                //JavaScriptSerializer jss = new JavaScriptSerializer();
                try
                {
                    using (MemoryStream ms = new MemoryStream(Encoding.UTF8.GetBytes(jsonstr)))
                    {
                        T jsonObject = (T)ser.ReadObject(ms);
                        return jsonObject;
                    }
                }
                catch (Exception ex)
                {
                    throw new Exception("Serialize Error: " + ex.Message);
                }
            }
            else
                throw new Exception("Not KeyValue ");
        }

        /// <summary>  
        ///  Get提交QueryString集合转换为实体类  
        /// </summary>  
        /// <typeparam name="T">类型</typeparam>  
        /// <param name="myrequest">Request对象</param>  
        /// <returns>T</returns>  
        public static T FormTomodelHttpGet<T>(HttpRequest myrequest)
        {
            DataContractJsonSerializer ser = new DataContractJsonSerializer(typeof(T));
            NameValueCollection coll = myrequest.QueryString as NameValueCollection;
            IDictionary<string, object> idc = new Dictionary<string, object>();
            foreach (string name in coll.Keys)
            {
                idc.Add(name, coll[name].ToString());
            }
            if (idc.Count > 0)
            {
                JavaScriptSerializer jss = new JavaScriptSerializer();
                string jsonstr;
                try
                {
                    jsonstr = jss.Serialize(idc);
                    using (MemoryStream ms = new MemoryStream(Encoding.UTF8.GetBytes(jsonstr)))
                    {
                        T jsonObject = (T)ser.ReadObject(ms);
                        return jsonObject;
                    }
                }
                catch (Exception ex)
                {
                    throw new Exception("Serialize Error: " + ex.Message);
                }
            }
            else
                throw new Exception("Not KeyValue ");
        }
    }  
}
